1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Fantom [35]
3 years ago
8

The acceleration of a falling rock that was initially moving 5 m/s, and had a final velocity of 11 m/s after accelerating for 3

seconds.
Physics
1 answer:
yanalaym [24]3 years ago
3 0

Answer:

2 m/s²

Explanation:

Given:

v₀ = 5 m/s

v = 11 m/s

t = 3 s

Find: a

v = at + v₀

11 m/s = a (3 s) + 5 m/s

a = 2 m/s²

You might be interested in
If the atoms that share electrons have an unequal attraction for the electrons is called
Karolina [17]

If the atoms that share electrons have an unequal attraction for electrons, the bond is called a Polar covalent bond.

<h3><u>Explanation:</u></h3>

A covalent chemical bond is formed in case of two different non-metals when one or more electron pairs are shared between bonding atoms. A difference in electronegativity of subsequent atoms of a covalent bond leads to formation of a small net charge around nucleus of each atom, pulling the shared electrons to one side of the bond, to the nucleus which has higher electronegativity.

HCl is an example of polar covalent bond and the HCl bond has Chlorine more electronegative. The bonding electrons are more close to Cl than H and hence Cl is partially negatively charged than H which has partial positive charge (HCl bond : H^{+} - Cl^{-}). When electrons shared in a covalent bond have equal attraction, the bond is a Non-Polar covalent bond.

6 0
4 years ago
Mr. Smith is designing a race where velocity will be measured. Which course would allow velocity to accurately get a winner?
REY [17]
Velocity is Displacement / Time

In order for Velocity to Accurately get a winner, you should be able to determine the race by looking at <em><u>How Far the competitors are from the starting point in the shortest amount of time

</u></em><u />so the answer should be something like : a 5 mile course from the center of the town  heading north to the outskirts of the town
4 0
4 years ago
A beam of light from a laser illuminates a glass how long will a short pulse of light beam take to travel the length of the glas
Eduardwww [97]

Answer:

The time of short pulse of light beam is 2.37\times10^{-9}\ sec

Explanation:

Given that,

A beam of light from a laser illuminates a glass.

Suppose, the length of piece is L=25.21\times10^{-2}\ m

Index of refraction is 2.83.

We need to calculate the speed of light pulse in glass

Using formula of speed

v=\dfrac{c}{\mu}

Put the value into the formula

v=\dfrac{3\times10^{8}}{2.83}

v=1.06\times10^{8}\ m/s

We need to calculate the time of short pulse of light beam

Using formula of velocity

v=\dfrac{d}{t}

t=\dfrac{d}{v}

Put the value into the formula

t=\dfrac{25.21\times10^{-2}}{1.06\times10^{8}}

t=2.37\times10^{-9}\ sec

Hence, The time of short pulse of light beam is 2.37\times10^{-9}\ sec

3 0
4 years ago
How many isotopes can an element have?
Artemon [7]
 <span>The element with the greatest number of known stable isotopes is tin, with 10 stable isotopes. Including unstable isotopes, mercury, cesium, and barium are each known to have 40 isotopes. Theory predicts however that many unstable isotopes should exist which have not yet been discovered (especially on the neutron-rich side of the line of stability.)

</span>
3 0
3 years ago
Read 2 more answers
A coil consists of 180 turns of wire. Each turn is a square of side d=30 cm, and a uniform magnetic field directed perpendicular
alexira [117]

Answer:

Emf induced i equal to 329.4 volt

Explanation:

Note : Here i think we have to find emf induced in the coil

Number of turns in the coil N= 180

Sides of square d = 30 cm = 0.3 m

So area of the square A=0.3\times 0.3=0.09m^2

Magnetic field is changes from 0 to 1.22 T

Therefore dB=1.22-0=1.22T

Time interval in changing the magnetic field dt = 0.06 sec

Induced emf is given by

e=-N\frac{d\Phi }{dt}=-NA\frac{dB}{dt}

e=-180\times 0.09\times \frac{1.22}{0.06}=329.4volt

8 0
4 years ago
Other questions:
  • A star is located at a distance of about 100 million light years from Earth. An astronomer plans to measure the distance of the
    11·1 answer
  • A small 24 kilogram canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy?
    5·1 answer
  • This map shows the Mid-Atlantic Ridge, which spreads approximately 2.5 cm/year. What is the rate of the spread in m/month?
    11·2 answers
  • What is one way to increase the amplitude of a wave in a medium?
    15·1 answer
  • A mass on the end of a spring undergoes simple harmonic motion. At the instant when the mass is at its maximum displacement from
    11·1 answer
  • The primary coil of a transformer contains 100 turns; the secondary has 200 turns. the primary coil is connected to a size-aa ba
    5·2 answers
  • A solid sphere is released from height h from the top of an incline making an angle θ with the horizontal. (a) Calculate the spe
    14·1 answer
  • Plants appear green because they do not absorb the green wavelengths of light. What happens to those green light waves when they
    6·2 answers
  • What is the unit for molar mass?
    13·2 answers
  • A sensor that generates voltages in the range of -2V..+2V for 0..400kg weight values Design a balance circuit with LCD display.
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!